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Finding the Fourth Proportional to 38,264.88, 57,290.88 and 28,876.56

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Solution

The fourth proportional to 38,264.88, 57,290.88 and 28,876.56 is: 43,234.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,264.88 : 57,290.88 = 28,876.56 : x
  2. Step 2: Convert to fraction form
    38,264.88/57,290.88 = 28,876.56/x
  3. Step 3: Cross multiply
    38,264.88x = 57,290.88 × 28,876.56
  4. Step 4: Simplify right side
    38,264.88x = 1,654,363,533.77
  5. Step 5: Solve for x
    x = 1,654,363,533.77/38,264.88
  6. Step 6: Final answer
    x = 43,234.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.